I'll never buy that. As the proud owner of 15,278 comics in my collection, including Avengers 19 thru current and mostly 90% Marvel. I like to be able to hold a comic in my fingers like a fine piece of art that is highly collectible and not some media which i'll probably lose anyway.
Viewing it on such a small screen and not being able to smell the ink is like baseball cards when they took the gum out of the packs. And personally some of the comics of today don't even come close to comics of the silver age.